Machine for punching and shearing metal



(No Model.)

' W. H. TYDEMAN.

MACHINE FOR PUNOHING AND SHEARING METAL. No. 316,420. Patented Apr. 21,1885.

Attorney A N. PETERS. Plmwuum m rwn Wuhmglun. D. c.

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WILLIAM H. TYDEMAN, OF EARLVILLE, ASSIGNOR OF ONE-HALF TO JACOB REIFF,OF AURORA, ILLINOIS.

MACHINE FORPUNCHING AND SHEARING METAL.

SPECIFICATION forming part of Letters Patent No. 316,420, dated April21, 1885.

Application filed April 4, 1884.

To all whom it may concern:

Be known that I, WILLIAM H. TYDEMAN, a citizen of the United States ofAmerica, residing at Earlville, in the county of La Salle and State ofIllinois, have invented certain new and useful Improvements in Punchingand Shearing, ofwhich the following is a specification, reference beinghad therein to the accompanying drawings.

This invention has relation to improvements in combined metal shears andpunches, its object being to secure increased leverage and do effectivework.

The invention consists of the detailed con l5 struction and combinationof parts, substantially as hereinafter fully set forth,and pointed outin the claim.

In the accompanying drawings, Figure 1 is a side view of my inventionout ofaction. Fig.

0 2 is a similar view, the same in action.

In the organization of my invention I employ a suitable narrowbaseframe, A, upon which is mounted and bolted the bed B, having anupright work-rest, a, for the punch, said rest 5 being made preferablyintegrally with the bed. About centrally of the base-frame A are securedparallel upright pieces 0.

D is the shear-lever carrying the blade b, with its cutting-edgepresented to and resting upon 3 a suitable surface of the bed-B, saidlever being pivoted at its downwardly extended or curved end, at d, toone end of the bed,while to its other end, at the upper side, isconnected or pivoted a link, E, in turn connected or pivoted to thependent arm of a cruciform lever-socket, F, centrally pivoted betweenthe uprights O, its fulcrum or pivot bearing in the latter.

To the up wardlyproj ecting arm of the leverso'cketF is connected orpivoted a link, G,with

40 its upper end pivoted between the uprights 0, its fulcrum or pivotbearing in the upper ends of said uprights.

(N0 model.)

In each of the two normally-horizontal sockets of the lcver-socketF isor may beinserted a hand-lever, H, for operating the shear, to getherwith the punch, next described.

I is the punch, with its shank resting in a passage in asupport, c,secured upon the bed contiguously to the work-rest a, to the rear end ofwhich punch is jointed or pivoted one end of link J, having its oppositeend pivoted or connected to the lower side of the inner end of theshear-lever D.

It will be seen from the foregoing, as shown in the two figures, thatthe action of the shear and punch is synchronous, therebyincreasing ordoubling the working capacity of the machine, and that a powerfulleverage or action is capable of being exerted upon both the shear andpunch.

If desired, one of the normally-horizontal socket-arms of thelever-socket F may be provided with ajointed lever to adapt it for connection to machinery for operation from that source.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

The shear-lever and punch in combination, the former being pivoted atoneend to its support and at its other end, upon the upper side, to a linkconnected to the pendent arm of a lever-socket, said socket having itsupwardly projecting arm connected to a link depending between supports,and said punch being connected to a link pivoted to the lower side ofone end of the shear-lever, substantially as and for the purpose setforth.

In testimony whereof I affix my signature in presence of two witnesses.

\VILLIAM H. TYDEMAN.

Witnesses:

J AMES D. FAMATTER, CHAS. B. VOSBURGH.

